Metal-cutting machine.



PATENTED JAN. 22, 1907.

' H, JOHN..

METAL CUTTING MAGHINE. APPLICATION IILEDAPE. 12. 1908.

THE NnRRIs PETE-RS cm, WASHINGTON, n. c.

3 SHEETS-SHEET l.

No- 841,979. PATEN'IED JAN. 22, 1907.

' -H. JOHN;

METAL CUTTING MAGHINB.

APPLIOATION FILED APB. 12.1906.

3 SHEETS-SHEET 2.

l /015 Z02ze66eu lu aya (752270 1n: NORRIS PETERS co., WASHINGTON, n. c.

No. 841,979. PATENT-ED JAN. 22, 1907.

T H. JOHN.

METAL CUTTING MACHINE.

APPLICATION FILED APR.12.1906.

3 SHEETS-SHEET 3.

JLz gqo (7571220 Way.

1H: NORRIS PETERS cu, WASHINGTON, n. c.

UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Jan. 22, 1907.

Application filed April 12 1906. Serial No. 311,376.

To all whom, it may concern:

Be it known that I, HUGO JOHN, manufacturer, a subject of the King ofPrussia, German Emperor, residing at Erfurt, Kingdom of Prussia, GermanEmpire, have in vented certain new and useful Improvements inMetal-Cutting Machines, of which the following is a specification.

My invention relates to a machine for dividing sectioned iron of allkinds by stamping out and cutting out a strip from the work, thismachine being chiefly intended for sectioned roller-iron, doubleT-girders, angleirons, bulb iron, U, Z, and T irons. For

complicated forms of irondouble T-girders, U, 2, and bulb irons-theseparation is eifected in two cuts, a left and -a right hand out. Forsimple forms of iron, such as T and angle irons, the article isseparated by one cut.

The machine acts in such manner that when cutting complicated forms ofiron the upper cutter cuts first in one and then in the other direction,this being effected owing to the upper cutter being mounted in abalance-beam which can be supported in the frame on the left as well ason the right hand of the upper cutter and is alternately rotatable abouta pin on the left and on the right hand sides. The special feature ofthe machine according to this invention consists, further, in the use ofa bottom cutter-holder which is turned through an angle of one hundredand eighty degrees. This bottom cutter-holder, with its bottom cutters,is adjusted in such manner that it rests against the inner flange of thegirder to be cut, at least along one-half of the web of the girder. Thebottom cutter-holder, rotatable through an angle of one hundred andeighty degrees, during the cutting supports first one and then the otherside of the double T-girder to be cut. Owing to this arrangement thegirder need not be turned or moved while being out. It is placed betweentwo parts of lateral cutters placed laterally against the flanges and onthe bottom cutter-holder, which is turned under the girder through anangle of one hundred and eighty degrees.

The machine can be constructed in sucha manner that the withdrawal ofthe inopera tive pivot-pin and the introduction of the operative one forthe balance-beam supporting the top cutter are effected simultaneously,so that only one bolt at a time acts as a pivotpin for-the balance-beamsupporting the upper cutter. Further, the rotation of the bottomcutter-holder can be rendered dependent on the introduction and removalof the pivot-' pin of the top cutter balance-beam in such a manner thatthe upper cutter could out only in that direction in which the girder issupported by the bottom cutter-holder.

The machine can be further arranged so that the two pairs of lateralcutters are simultaneously and uniformly pressed against the flangesof-the double T-girder to be cut, and the holders of the lateral cutterscan be arranged on paths inclined toward the working opening in order toenable the top cutter to cut freely even girders of small cross-section.The driving-gear for the machine can also be provided with such anarrangement that the driving mechanism would be thrown into gear onlywhen one of the pivot-pins of the top cutter balance-beam is in theoperative position and the other in ino erative position and also thebottom cutter older is in one or the other of its end positions. It isalso advantageous not only to balance the balance-beam for the up percutter-holder, but to overbalance it in order that the axis of thepivot-pin to be introduced should always coincide with the perforationin the balancebeam. Finally, the machine is provided with a strippingdevice which afterthe first out has been made (before the throwing ofthe machine into gear for the second cut) effects the stripping off ofthe work and also protects the upper cutter from injury during theintroduction of the work.

A constructi on ofthe machine according to this invention. isillustrated, by way of example, in the accompanying drawings.

Figure 1 shows the same in front elevation and Fig. 2 in plan. Fig. 3 isa section chiefly on the broken line A B of Fig. 1. Fig. 4 is ahorizontal section on C D. Figs. 5 and 6 show the stripping-off devicein front and side elevations. Figs. 7 to 10 show diagrammatically theworking of the machine during cutting in one or in the other direction.Figs. 11 and 12 show the action of the lateral cutters guided oninclined planes or paths when cutting small girders.

The construction of lows:

The body of the machine constituted by suitable plates 1 and 2,supported by brackets 3 and 4, is provided at the bottom with a workingopening. The tools comprise a rotatable bottom cutter-holder 5, withbottom ITO cutters 6 and 7, secured to their seat by means of screws andpins, two lateral cutters 1 4, and an upper cutter 2 5 cutting betweenthe lateral cutters and the bottom cutters.

The bottom cutter-holder 5 is adjustably mounted on a rotatabie plate 8and is held fast in its position by means of two screws 8 and 8 or bysome other means. The plate 8 rests on the walls of the frame androtates about a central pin 9, (see Fig. 3,) secured by a pin 10 to theframe-body 1 2. The plate 8 is provided on the largest portion of itscircumference with teeth 11, which serve to rotate the said plate 8 bymeans of a toothed rack 45 in the manner hereinafter described. The pin9 rests in apart 12, filling up the bottom of the frame-body 1 2 andscrewed to it. The bottom cutter-holder is adjusted to suitthedimensions of the girder to be cut. The diameter of the half-circlewhich it describes is in the construction shown in Fig. 1 about equal tothe inside depth of the I girder. After the first out has been effectedthe bottom cutter-holder is turned through an angle of one hundred andeighty degrees before it makes the second cut.

The lateral cutter group, arranged so as to be movable on inclinedpaths, comprises two lateral cutter-holders 13, each of which receives apair of lateral cutters 14. lateral cutter-holders are guided at the topand at the bottom in corresponding recesses of the two walls 1 and 2 ofthe frame and at the bottom by means of parts 15, introduced between thewalls of the frame. The guiding at both sides is effected by means ofplates 1 and 2 riveted to the central walls. The back surface of thelateral cutter-holders are provided with a through-groove 16, with whichengage correspondingly-shaped heads of the two screw-threaded spindles17, These screw-threaded spindles engage with tapped holes in twotransverse pins 18, passing through the main body and screwed fast tothe same. On the grooved smooth end of the spindles 17 are mountedtoothed wheels 19. which are prevented from laterally shifting by meansof suitable bearings 19. /Vith the wheels 19 engage toothed wheels 20.The connection of the two toothed-wheel systems is effected by means ofa spindle 21, which passes laterally of the frame-wall 2, parallel tothe same, and is guided in bearings 22. One of the spindles 17 isprovided with a right-hand screw-thread and the other with a left-handscrew-thread. The spindle 21 is rotated by means of a crank-handle 23,whereby the screw-spindles 17 are shifted relatively to each other andthe cutter systems are simultaneously brought nearer to or moved fartherawa vthat is to say, adjustedt0 suit the height of the section to becut.

The upper cutter is the only power-driven cutting part of the machineand serves for cutting out a strip from the work-for in- The two 7stance, from the double T-girder illustrated. The upper cutter 25 ismounted on the adjustable upper cutter-holder 24. Its upper portion 25isinclosed in the upper cutterholder in such manner that thecutting-plate 25 projects downward. The upper cutter is held fast in itsseat by means of a bolt 26. The upper cutter-holder 24 has the shape ofa balance-bearn. It tapers toward its two ends, and at each end it isprovided with a perforation for receiving an oscillation-pin 27. Asstated in the introduction, the upper cutter-holder must be rotatableabout one pin 27 during the cutting of the upper cutter in one directionand during the cutting in the other direction about the other pin 27 Theupper cutter-holder must therefore execute an oscillating movement aboutone pin, and during that time the other one must be withdrawn from itsperforation. In order that the upper cutter-holder on its return to theupper end position, Fig. 1, may find again its proper position, the pinor bolt is made so that it cannot be withdrawn altogether; but thematerial of the upper cutter-holder 24, situated over the short end ofthe bolt 27, re maining inside is cut so as to form a groove 29. By thismeans the upper holder, which receives its working pressure from above,is free to move downward, and at the same time the proper position ofthe cutter and the material to be cut is insured. The bolts 27 areguided and supported each in a socket 30 and in abearing-ring 31,secured to the framewalls in a suitable manner.

In order that a bolt 27 may act as a pivotpin for the uppercutter-holder and that the other may be simultaneously urithdrawn and inorder to obtain this action alternately, the

following arrangement has been provided.

The bolts are connected by rods constructed of two bell-crank levers 28and a rod 32, connecting the same, together with hinge-pins 32 ()n abearing 33, screwed to the walls of the frame, rests the left-handbell-crank lever and pivots about the pin 33. The longer end of eachbell-crank lever is formed into an eye 28 and engages with a recess 27 aof the bolt 27. In order to make this possible, the socket 30 isprovided with a slot 30, Fig. 3, through which can pass the bell-cranklever 28. The right-hand bellcrank lever 28 rests on a bearing 35. Inthis way when one bolt 27 is withdrawn the other bolt 27 is introducedinto the upper cutterholder and the bearing-ring 31. In order to enablethis adjustment to be effected by hand, the following mechanism isprovided: TheTight-hand bell crank lever 28 rests on the bearing 35 andis secured to the vertical spindle 36. The bearing 35 is screwed to theframe and serves as a bottom guide 35 for the spindle 36. The upperguide for the same is constituted by the bearing 37, also screwed to thewall 1 of the frame. The collar 38 below the guide of the spindle on thebearing and a disk 39 at theupper end of the spindle 36 prevent thelatter from moving longitudinally. To the bottom end of the spindle 36is secured a bevel-wheel 40. At right angles to the spindle 36 isinserted into the projection 35 of the bearing 35 a pin 41, on whichrotates a bevel-wheel 42, to the hub of which is secured a double armedlever 43. A nut 41 of the pin protects the lever and toothed wheelagainst movement. A weight 43 is secured to the end of the upper arm ofthe lever 43 by means of a'bolt 43*,provided with a collar. Theprojecting end of this bolt is formed into a handle 43.

The movement of the lever 43 in the direction of the arrow toward theriglitthat is to say, from the left-hand end position shown in Fig. 1into the dotted position 00 ycauses the spindle 36 to turn, andtherefore the bell crank lever 28 to turn correspondingly, and the twobolts 27 to move. During that time i the weight 43 causes the lever 43to remain in 'the upper surface by angular guides 47,

its end position until the action of the weight is neutralized by thepull on the handle 43.

The device described, which brings about positive movement of the bolts27 toward each other, can be connected to a device which brings aboutthe rotation of the bottom cutter-holder 5 in such manner that when theleft-hand bolt 27 is introduced as a pivot-pin for the uppercutter-holder 24 the bottom cutter-holder 5 is moved into its lefthandend position. On the contrary, when the right-hand bolt 27 is introducedand the lefthand bolt 27 thus removed the cutter holder 5 is turnedthrough an angle of one hundred and eighty degrees into its right-handend position. In order to eflectthat, one end of a link 44 is connectedbya bolt and nut 44 to the bottom arm of the lever 43, while the otherend is connected to a toothed rack 45 by means of a bolt. 44 The teethof the toothed rack engage with the teeth 11 on the rotatable plate 8.The under face of the toothed rack 45 is supported and guided by anangle-bar 46 and at the back wall and at screwed to the said bar, Fig.3. In this way simultaneously with the movement of the bolts 27 therotation of the plate 8 takes place, together with that of the bottomoutter-holder 5 resting upon it. The rate of transmission of the twobevel-wheels 40 and 42 is chosen so that each movement of the lever 43from one endposition to the other causes one of the bolts to bewithdrawn and the other to be introduced and the bottom cutter-holder tobe turned exactly through an angle of one hundred and eighty degreesabout its vertical axis. Two stops 47 against which the ends of thetooth-rack strike, limit the position of the bolts 27 and the positionof the bottom cutter-holder 5.

Instead of limiting the rotation of the bottom .the bolts tobe'introduced again into their right ositionthe cutter-holder 24 is notonly alanced, but overbalanced. In this way the working parts arerelieved from the raising operation and the introduction and removal ofthe bolts are insured even when, owing to the wear of the working parts,there is backlash, and therefore a loss of stroke in the uppercutter-holder. This overbalancing is effected in the following manner:About a bolt 48 let into the back frame-wall 2, oscillates a-lever 48.To its front end is joined by a bolt and nut 48 a link 49, the bottomend of which engages a bolt 49*, screwed into the upper cutterholder..The back frame-wall is for that purpose cut out upward to such anextent (Fig. 1 dotted) that the bolt 49 is situated in the workingopeningthat is to say, can freely participate in the movement of theupper. cutter-holder. On the front end of the lever 48 there acts apressure-spring 50, threaded upon the guide-rod 51. The latter isprovided at the bottom with a collar 51 and below the same with a hingepart 51*, engaging the lever 48 by means of a bolt and nut 51. Anabutment 52 of the spring 50, which at the same time forms a guide forthe rod, is screwed at the top to the wall of the frame. In that way thespring 50 exercises a pressure on the collar 51 swings the front end ofthe lever 48 upward, and then pulls the upper cutter-holder 24 upward,when the latter is not exposed to any downward pressure by thedriving-gear.

Forcarrying out the operation a suitable force is required which actsvertically on the center of the upper cutter-hold er, the working strokebeing adjusted to suit the largest sectional dimensions of the iron tobe cut.

The machine can be provided. with any desired hand or power drive. Thisdrive does not form the subject of this invention. In the drawings themachine is shown with the ratchet-gear described in the German PatentsNos. 119,653-and 119,882, (the socalled Johns oscillatinglevergear.)This gear is provided with the pressure-part-releasing device appliedfor in the German application, Serial No. 40,993 of the 23d September,1905, corresponding to the United States application for ratchet feedingmechanism, filed November 13, 1905,

ITO

the recesses 39 or 39 is insuch a position,

relatively to the latchf that it can freely engage with it, andtherefore the pressure part it can be brought into gear. In any otherposition of the lever 43, the throwing into gear is rendered impossible,owing to the latch f coming in contact with the nonslotted portion ofthe disk 39, so that the movement of the hand-lever h, and therefore thethrowing into gear of the power-drive, becomes impossible. Thecooperation of the engaging lever 7L and slotted disk 39insures thecorrect position of the oscillating bolts and of the bottomcutter-holder and also insures safety of the attendants of the machine.

The release of the pressure part 7c-that is to say, the stopping of theworking parts-is automatically brought about in the upper position ofthe eccentric, and therefore also of the upper cutter, as described inthe application Serial No. 40,993. The throwing into gear for each cutis effected by a rocking of the lever 72. from the left to the righthand side.

For the double purpose, first, of holding fast the work partly cutduring the removal, (ascent of the upper cutter,) and, secondly, ofprotecting the upper cutter from injury or breakage during theintroduction of the work to be out there is provided a stripping-ohdevice, Figs. 5 and 6.

The stripping-off device 53 is bent at its bottom end 53 in the shape ofa hook in order to guide downward and into the cutter system the workmoved in the direction of the working opening, but perhaps held slightlytoo high. The stripping-off device is rotatably suspended by means ofthe bolt 53 in the bearing 54, secured to the wall ofthe frame, so thatit can be raised upward when the working opening (for instance, duringthe change of tools) is to be clear or when it is not to be used, (forinstance, when outting such irons as have to be cut in one operation.)From its bottom position the strip ping-01f device cannot be forced inthe direction toward the upper cutter, as it would strike in thestripping-off bearing against a stop-surface 54 The working of themachine is as follows: Assuming that it is desired to cut a double-Tgirder and that the parts of the machine are in the position shown inFig. 1, the bottom cutter-holder is arranged and fixed to suit theinside height of the girder-section. The girder to be cut is pushed intothe working opening and the lateral cutters are brought, by means of thecrank up to the flange. The pressure part is is thrown into gear,whereupon the left-hand cut is at once effected in the direction of thearrow, Figs. 7 and 8, and up to the point of the same, and the uppercutter is positively returned along the same path into its upper endposition, Fig. 7, where it will be stopped by the automaticpressure-part-disengaging gear. The weightlever 43 is then thrown fromits left-hand position, Fig. 1, toward the right, whereby the left-handpivot-pin 27 is withdrawn and the right-hand one introduced, and thebottom cutter-holder is turned through an angle of one hundred andeighty degreesthat is to say, from its left-hand end position into theright-hand end position, Fig. 9. The second cut is thus prepared, and itis only necessary to again throw into gear in order to efiect it, Fig.10. This throwing into gear is rendered possible, as the latch f on thelever 72 can engage with the slot 39 of the disk 39.

The shavings or waste produced during the cutting fall between the wallsof the frame into a pit arranged under the machine. The path for it isrendered free by corresponding holes in the insertion parts.

For cutting I, U, 2, and bulb irons the process is the same as abovedescribed.

The cutting of T and angle irons is effected only on one desired side,as they can be cut in one operation.

For cutting I, U, 2, and bulb irons of smaller cross-section a smallupper cutter and a shorter bottom cutter-holder are put in, the lateralcutters being adjusted for all kinds and sizes of iron which the machinecan cut at all. In order to make it possible to cut smaller girders withshorter bottom cutterholders and smaller upper cutters, while keepingthe same lateral cutters 14, the lateral cutter-holders are arranged onplanes or paths inclined toward the center of the work, so as to enablea free cut to be efiected and so that the lateral cutter-holders are notin the way of the upper cutter-holder. Figs. 11 and 12 illustrate theposition of the lateral cutters for smaller and shorter bottomoutter-holders and the movement of the upper cutter for the saidposition.

What I claim is 1. In a machine of the class described, the combinationwith a movable cutter-head provided with cutting means to operate upondifferent portions of the stock, a movable shearing device, and meanscooperative with the head and shearing device for causing the 2. In amachine of the class set forth, the combination with an oscillatory headcarrying cutting means, cooperating movable shearing devices, and meanscooperative with the head and shearing device for causing a movement ofone on the action of the other.

3. In a machine of the class described, the combination with acutter-head having cutting means and two distinct stages of operation, ashearing device, and connections between the cutting-head and shearingdevice for causing the movement of the shearing device to bring it intoposition to cooperate With said cutting means on each stage of theoperation of the cutter-head.

4. In a machine of the class set forth, the

combination of an oscillatory cutter-head, pressure mechanism, andcooperative shearing devices, the said cutter-head being movable about aplurality of pivots.

5. In a machine of the class set forth, the

combination of an oscillatory cutter-head,

pressure mechanism, and cooperative shearin devices, the saidcutter-head being movab Ie about a plurality of detachable pivots.

6. In a machine of the class set forth, the combination of anoscillatory cutter-head, pressure mechanism, and cooperative shearingdevices, the said cutter-head being alternately movable about aplurality of pivots.

7. In a machine of the class set forth, the combination of anoscillatory cutter-head, pressure mechanism, and cooperative shearingdevices, the said cutter-head being movable about a plurality ofalternately-detachable pivots.

8. In a machine of the class set forth, the

combination of a cutter-head, pressure mechanism, cooperative shearingdevices, the said cutter-head being movable about a plurality of pivots,one of said pivots adapted to be withdrawn while the other forms apivot-pin for the said cutter.

9. In a machine of the class set forth, the combination of acutter-head, pressure mechanism, cooperative shearing devices, the saidcutter-head being movable about a plurality of pivots, and connectingmeans for engaging the said pivots and alternately changing the bearingof the cutter-head.

10. In a machine-of the class set forth, the combination of acutter-head, pressure mechanism, cooperative shearing devices, the saidcutter-head being rotatable about a plurality of slotted pivots, and aconnecting member having terminally-disposed bell-crank levers adaptedto engage the slots in said pivots and alternately change the bearing ofthe cutter-head. v

11. In a machine of the class set forth, the combination with acutter-head, pressure mechanism and cooperative shearing devices, ofmeans for automatically controlling the return of said cutter-headcomprising a pressure-spring and a weighted lever;

12. In a machine of the class set forth, the combination of acutter-head, pressure mechanism and cooperative shearing devices, thesaid cutter-head being rotatable about a plurality of pivots andprovided with a guidegroove extending upwardly and merging at the bottominto the perforations of said pivotpin.

13. In a machine of the class set forth, the combination with anoscillatory head carrying a cutter, of shearing devices comprisingsimultaneously-adjustable side members, and a movable and adjustablebottom member, the latter adapted to form a cutting-abutment.

14. In a machine of the class set forth, the

combination with an oscillatory head carrying a cutter, of shearingdevices comprising adjustable side members, and a movable and adjustablebottom member, the latter being of a width at least equal to one-half ofthe inside depth of the girder and adapted to alternately form acutting-abutment.

15. In a machine of the class set forth, the combination of acutter-head, pressure mechanism and a movable shearing device, the saidcutter-head being rotatable about a plurality of pivots, a memberconnecting said pivot-points, a rotary shaft having a toothed gearadapted to cooperate with said connecting member, and a weighted levergeared to said shaft and connected to the shearing device.

16. In a machine of the class set forth, the combination of acutterhead, pressure mechanism and a rotatable shearing device, the saidcutter-head being rotatable about a plurality of pivot-points, a memberconnecting said pivotpoints, a rotary shaft having a toothed gearadapted to cooperate with said connecting member, a weighted levergeared to said shaft and connected to the shearing device, and stops forlimiting the oscillation of the said lever.

17. In a machine of the class set forth, the combination with anoscillatory cutter-head, of a rotatable shearing device and opposingholders mounted on screw-threaded spindles and carrying cutters, pinionson the respective spindles, and a power-transmitting shaft withcorrespondingly-engaging pinions adapted to simultaneously adjust thecutters laterally.

18. In a machine of the class set forth, the combination with anoscillatory cutter-head, of a rotatable shearing device and lateralcutters, and inclined means on which the cutters I slide.

19. In a machine of the class set forth, the combination with anoscillatory cutter-head, of a rotatable shearing device and lateralcutters, and inwardly-inclined means on which the cutters slide.

20. In a machine of the class set forth, the combination of anoscillatory cutter-head, of

a rotatable shearing device and opposing holders mounted onscrew-threaded spindles and carrying cutters, pinions on the respectivespindles, inclined blocks, and a powertransrnitting shaft engaging saidpinions thereby adjusting them simultaneously, the holders sliding onthe inclined blocks.

21. In a machine of the class set forth, the combination with anoscillatory cutter, cooperative rotatable cutters, and pressuremechanism, of a spindle in operative relation therewith and adapted tobe controlled by the operation of the pressure mechanism.

22. In a machine of the class set forth, the combination with anoscillatory cutter, cooperative rotatable cutters and pressuremechanism, .of'a spindle carrying a notched disk, a locking projection,levers connecting the pressure mechanism with the said projection andadapted to be simultaneously operated with the pressure mechanism.

23. In a machine of the class set forth, the

combination of an oscillatory head having a cutter, of a plurality ofshearing cutters, and

a hinged stripping-ofi' device having an upturned terminal and adaptedto support the work when the upper cutter is removed.

24. In a machine of the class set forth, the combination with anoscillatory head carrying a cutter, of a rotatable shearing device andmeans for causing the action of one upon the movement of the other.

25. In a machine of the class set forth, the combination with anoscillatory head carrying a cutter, of a rotatable and adjustableshearing device and means for causing the action of one upon themovement of the other.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

HUGO JOHN.

Witnesses PAUL TEIOHMANN, ANNE B. SLoouM.

